[Tizen] Screen orientation lock should not depend on sensor.

If JS client invokes the API screen.orientation.lock, the actual screen should be locked to correct orientation no matter whether the sensor is connected. The CL is to remove the logic of checking sensor connection.
It's to fix the conversion between portrait and landscape orientations. The "rot" is the enum "gfx::Display::Rotation" which value can be 0, 1, 2, 3. The author intent is to convert portrait to landscape if display width is bigger than height. However if "rot" is 0 (gfx::Display::ROTATE_0), the (rot-1)%4 becomes -1 which is invalid value and lead to unexpected result. I tried to fix as (rot+3)%4, but that cause the window up-side down which is wrong as well. I feel the (rot+1)%4 can correctly convert portrait to landscape (e.g. It changes ROTATE_0 to ROTATE_90, or ROTATE_180 to ROTATE_270)